Microsoft has 4,599 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2930 in the last 90 days against 932 in the 90 before. The busiest recent month was October 2026 with 1482. The median CVSS is 7.8 (high), with 273 rated critical. 2% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 112 days (95 cases). The dominant weakness classes are CWE-122 (931) and CWE-416 (851). Most affected products: windows_10_1607 (988), Windows 10 Version 1607 (877), 365_apps (267).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 2% vs 1% corpus
- Median CVSS
- 7.8
- Publish → KEV
- 112 d median(95)
- Last 90 days
- 2930 prev 932
Weakness classes
Products
- windows_10_1607 988
- Windows 10 Version 1607 877
- 365_apps 267
- Microsoft 365 Apps for Enterprise 232
- Windows 10 Version 1809 199
- windows_10_1809 174
Worst active — by depth score
CVE-2025-53770Critical· 9.8Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing…100CVE-2021-38647Critical· 9.8Open Management Infrastructure (OMI) Remote Code Execution Vulnerability100CVE-2021-34473Critical· 9.1Microsoft Exchange Server Remote Code Execution Vulnerability100CVE-2021-26855Critical· 9.1Microsoft Exchange Server Remote Code Execution Vulnerability100CVE-2020-0796Critical· 10.0A remote code execution vulnerability exists in the way that the Microsoft Server Message Block 3.1.1 (SMBv3) protocol handles certain requests, aka 'Windows SMBv3 Client/Server Remote Code Execution Vulnerability'.100
Microsoft vulnerabilities
CVEs affecting Microsoft, newest first. Open any entry for full detail, references, and exploit status.
4599 CVEsRSS
CVE-2026-50389Medium· 5.5Windows File Explorer Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
CVE-2026-50385High· 8.8Windows Runtime Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.
CVE-2026-50383Medium· 6.1Windows Print Spooler Information Disclosure Vulnerability
Buffer over-read in Windows Print Spooler Components allows an authorized attacker to disclose information locally.
CVE-2026-50374Medium· 6.3Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges with a physical attack.
CVE-2026-50367High· 7.8Windows Sensor Data Service Elevation of Privilege Vulnerability
Incorrect access of indexable resource ('range error') in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.
CVE-2026-50362High· 7.8Windows Resilient File System (ReFS) Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.
CVE-2026-50480High· 7.8Heap-based buffer overflow in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.
Heap-based buffer overflow in Windows Web Proxy Auto-Discovery Protocol (WPAD) allows an authorized attacker to elevate privileges locally.
CVE-2026-50476High· 7.8Windows Network Connections Service Elevation of Privilege Vulnerability
Use after free in Microsoft Windows allows an authorized attacker to elevate privileges locally.
CVE-2026-50475Medium· 5.5Windows Kernel Information Disclosure Vulnerability
Buffer over-read in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-50474High· 8.8Remote Desktop Client Remote Code Execution Vulnerability
Use after free in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
CVE-2026-50470High· 7.5Windows Network Policy Server SNMP Information Disclosure Vulnerability
Out-of-bounds read in Windows Network Policy Server SNMP allows an unauthorized attacker to disclose information over a network.
CVE-2026-50461High· 7.8Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
CVE-2026-50458High· 7.8Microsoft Brokering File System Elevation of Privilege Vulnerability
Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
CVE-2026-50453Medium· 6.1Windows USB Audio Class Driver Information Disclosure Vulnerability
Out-of-bounds read in Windows USB Audio Class driver (usbaudio.sys) allows an unauthorized attacker to disclose information with a physical attack.
CVE-2026-50450High· 7.8Windows Network Connections Service Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Wireless Wide Area Network Service allows an authorized attacker to elevate privileges locally.
CVE-2026-50447Critical· 9.8Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over a network.
CVE-2026-50444High· 8.8Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability
Missing authentication for critical function in Windows Server Update Service allows an authorized attacker to elevate privileges over a network.
CVE-2026-50438High· 8.8Microsoft PC Manager Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Microsoft PC Manager allows an authorized attacker to elevate privileges locally.
CVE-2026-50431Medium· 5.5Windows Quality of Service (QoS) Packet Scheduler Information Disclosure Vulnerability
Windows Quality of Service (QoS) Packet Scheduler Information Disclosure Vulnerability
CVE-2026-50429High· 8.2Windows Kernel Information Disclosure Vulnerability
Out-of-bounds read in Windows Kernel allows an unauthorized attacker to disclose information over a network.
CVE-2026-50424High· 7.5Windows Domain Controller Denial of Service Vulnerability
Untrusted pointer dereference in Windows Domain Controller allows an unauthorized attacker to deny service over a network.
CVE-2026-50420Medium· 6.2Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.
Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to disclose information locally.
CVE-2026-50415Medium· 5.3Windows Media Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Media allows an unauthorized attacker to disclose information over a network.
CVE-2026-50406High· 7.0Windows Backup Engine Elevation of Privilege Vulnerability
Use after free in Windows Backup Engine allows an authorized attacker to elevate privileges locally.
CVE-2026-50394Medium· 5.5Windows Media Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Media allows an authorized attacker to disclose information locally.
CVE-2026-50505High· 7.5Windows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability
Use after free in Windows Message Queuing allows an authorized attacker to execute code over a network.
CVE-2026-50503High· 7.0Windows Runtime Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.
CVE-2026-50502High· 8.0Windows Event Logging Service Remote Code Execution Vulnerability
Insufficient granularity of access control in Windows Event Logging Service allows an authorized attacker to execute code over a network.
CVE-2026-50501High· 7.8Windows Resilient File System (ReFS) Remote Code Execution Vulnerability
Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.
CVE-2026-50500High· 7.5Windows Netlogon Elevation of Privilege Vulnerability
Use after free in Windows Netlogon allows an authorized attacker to elevate privileges over a network.